Cove base



FIG. 1 is a front bottom perspective view of a cove base showing our new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a rear top perspective view thereof;

FIG. 6 is a front bottom perspective view of a second embodiment thereof;

FIG. 7 is a left side elevational view of the second embodiment;

FIG. 8 is a rear top perspective view of the second embodiment;

FIG. 9 is a right side elevational view of the second embodiment; and,

FIG. 10 is a rear elevational view of the second embodiment. 

The ornamental design for a cove base, as shown and described. 